.obox {
  width: 100vw;
  height: 100vh;
  background: #fff;
}
.obox .nav {
  width: 100vw;
  height: 8%;
  background: #00AFF0;
  color: #fff;
  text-align: center;
  font-size: 45px;
  line-height: 130px;
}
.obox .login {
  width: 100vw;
  height: auto;
  padding-top: 150px;
}
.obox .login P {
  text-indent: 3em;
  font-size: 35px;
  color: #666;
  margin-top: 50px;
}
.obox .login input {
  display: block;
  margin: 0 auto 0;
  width: 80%;
  height: 60px;
  border: dashed #ccc;
  font-size: 30px;
  text-indent: 5px;
}
.obox .login .login_btn {
  margin: 50px auto 0;
  display: block;
  width: 80%;
  height: 80px;
  background: #00AFF0;
  border: none;
  color: #fff;
  font-size: 35px;
  border-radius: 5px;
}
